/Engine/Source/Runtime/Engine/Classes/Animation/AnimInstance.h
Get whether a particular notify state is active in a specific state last tick.
bool WasAnimNotifyStateActiveInSourceState ( int32 MachineIndex, int32 StateIndex, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UAnimNotifyState](API\Runtime\Engine\Animation\AnimNotifies\UAnimNotifyState) > AnimNotifyStateType )